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Full Discussion: UNIX version standards
Top Forums Programming UNIX version standards Post 35866 by Neo on Friday 9th of May 2003 09:15:04 PM
Old 05-09-2003
Version control and numbering is a matter of personal or organization preferences. For me, here is what I do for papers:
  • First rough draft or outline is version 0.01
  • First draft is 0.10
  • Each time I correct a nit or typo increment by 0.01
  • When I feel it is about half way ready it is called 0.5
  • Major changes increment by 0.10 or 0.05 (depending)
  • When close to a final draft release it is at least 0.9 something
  • Major first release after lots of reviews is 1.0

So, release numbering is often a matter of style and you know you have 'arrived' when others begin to understand your logic when releasing updates. Folks often tease me about my personal numbering style when writing documents.....it can be fun!!

Software release styles are similar and often have letters like a (alpha) and b (beta) to signify very early releases (similar to 0.01 or 0.10 in documents)..... however since software has the element of testing, there are lots of variations. With experience, you will develop your own style.

If you are developing, create your own style in your release numbering, but keep in mind that the first solid release is normally 1.0 not 3.0 or 6.0 Smilie
 

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GET_END(3)						     Library Functions Manual							GET_END(3)

NAME
get_end, get_etext, get_edata - get values of UNIX link editor defined symbols SYNOPSIS
#include <mach-o/getsect.h> unsigned long get_end(); unsigned long get_etext(); unsigned long get_edata(); DESCRIPTION
These routines provide a stopgap measure to programs that use the UNIX link-editor defined symbols. Use of these routines is very strongly discouraged. The problem is that any program that is using UNIX link editor defined symbols (_end, _etext or _edata) is making assumptions that the program has the memory layout of a UNIX program. This is an incorrect assumption for a program built by the Mach-O link editor. The reason that these routines are provided is that if very minimal assumptions about the layout are used and the default format and memory layout of the Mach-O link editor is used to build the pro- gram, some things may work by using the values returned by these routines in place of the addresses of their UNIX link-editor defined sym- bols. So use at your own risk, and only if you know what your doing. Or better yet, convert the program to use the appropriate Mach or Mach-O functions. If you are trying to allocate memory use vm_allocate(2), if you are trying to find out about your address space use vm_region(2) and if you are trying to find out where your program is loaded use the dyld(3) functions. The values of the UNIX link-editor defined symbols _etext, _edata and _end are returned by the routines get_etext, get_edata, and get_end respectively. In a Mach-O file they have the following values: get_etext returns the first address after the (__TEXT,__text) section, note this my or may not be the only section in the __TEXT segment. get_edata returns the first address after the (__DATA,__data) section, note this my or may not be the last non-zero fill section in the __DATA segment. get_end returns the first address after the last segment in the executable, note a shared library may be loaded at this address. SEE ALSO
ld(1), dyld(3) Apple Computer, Inc. April 10, 1998 GET_END(3)
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